Automatic sprinkler.



PATENTED FEB. 5, 1907.

No. 848,130. 0. E. BUELL.

AUTOMATIC SPRINKLER.

APPLICATION FILED MAY 8, 1887.

UNITED STATES PATENT oEEIoE.

CHARLES E. BUELL, OF NORTH PLAINFIELD, NEW JERSEY, ASSIGNOR TO GENERAL FIRE EXTINGUISHER COMPANY, OF NEW YORK, N. Y., A COR- PORATION OF NEW YORK.

AUTOMATIC SPRINKLER.

Specification of Letters Patent.

Patented Feb. 5, 1907.

Application filed-May 9,1887. Serial No. 237.647.

To all whom, it may no/m'w'n':

Be it known that I, Cnfuitns ll. BUELL, a citizen of the United States, residing at North Plainlield, in the county of Somerset and State of New Jersey, but a former resident of Springfield, lIapmden county, State of Massachusetts, have invented certain new and useful Improvements in Automatic Sprinklers, of which the following is a specification.

The invention relates to an automatic sprinkler which is especially adapted for use in a fire-extinguishing system in which the distributing-pipes normally contain a vacuum, said s rinkler being adapted to operate when acte upon 1) heat to admit air to the distributing-pipes and destroy said vacuum.

To this end the invention consists in a sprinkler of this character containing certain novel features of construction hereinafter described and claimed.

In describing the invention in detail reference may be made to the accompanying drawings, in whieh Figure Its a side elevation of my improved sprinkler with all the parts assembled. Fig. 2

is a side elevation of the sprinkler-lrame. Fig. i

3 is a side elevation of the sprinkler-nozzle.

Figs. 4, 5, and 6 are detail views oft-he valve Figs. 7, 8', Qyandlt) are 5 device employed. detail views of the valve-holding devices. Fig. 11 1s a sectional view, on an enlarged scale, of the valve device for destroying the 1 vacuum.

Referring to the drawings, A is the tubular )ortion of a sprinkler, terminating at its 1 l It is serew-threzuled at its upper end to screw into the'supply- Below this point it has another screwower end in a nozzle 11.

pipe. thread to screw into the nrtOrnally-screwthreaded annular neck of the part B, through which the nozzle n, protrudes. From the annular screw-thrcinleml neck of the body part B extend downwardly-haugmg arms, wluch carry the spreader l) and are provided with hooked lower ends to receive and engage the hooks 'of the two-part yoke 1 which is formed of the two pieces 1 2, soldered together with an easily-fused allov. The

meeting faces of the parts I 2 to be soldered together are preferably corrugated, so that they will interlock, and thus in a measure V l nozzle, a yoke or frame adjustable on said take from the solder the strain of any pressure that may come upon thein. Upon the yoke thus constructed and located is suported the cross -bar C, provided with forked ateraliy-projecting terminals which straddle I the arms of the body B and prevent displacement of the yoke 1/. The plate C supports the stem 8, the upper cu -shaped end of which receives the lower our of the valve 1), this valve having in its lower or small end a hole that is closed by a drop of solder. The valve at the top is faced by a plate 1), preferably of lead, which has a hole in it to admit air when the solder in valve 12 is melted.

Interposed between the )late 2 and the nozzle n is a gasket g. I hen tie parts of the sprinkler are assembled, the nozzle n is screwed down to adjustment and then locked a in place by a tube or pin at q, the hole in the l part A, into which the tube or pin enters; 5 being drilled after the sprinkler is adjusted. The tube (1 contains a valve 1), that is soldered in with an easily-fusible solder, and when the solder melts the valve sucks into the pipe under vacuum, thus admitting air thereto through the now open tube q.

When the parts of the yoke y separate and drop and the plate C is released, the stem 8 will drop away from the valve 22. The heat is thus permitted to reach the solder, which l l l l l l l l l l l to the pipe system under vacuum.

I may use a sprin or its equivalent to lift or force the sprink er-valve from its seat; but the devices shown are preferred.

Ipropose coating the sprinkler with platinum, porcelain, or other coating not acted upon by fumes or corroding vapors.

By the construction described I prevent lstickjng action due to corrosion and provide between the valve and its seat a non-corrodii ble heatinsu1ating bearing.

5 -What I claim herein as new, and desire to secure by Letters Patent, is-

1. An automatic sprinkler for use in a vacuum system comprising an outlet and a valve closing said outlet, and provided with I an opening normally closed by an inwardl opening valve adapted to be released by t re action of heat to admit air to the system, substantiallyas described.

2. An automatic sprinkler comprising sa.

closes the/hole in the latter, and the melting I of the solder opens that hole and admits air Q 843,1 so

nozzle, 1 tube passing tbrou b said frame nozzle, a. yoke or frame adjustable on said rc and nozzle, and means-normal y closing said f nozzle, {1 tube passing through said frame tube, substantially as described. and nozzle, a Valve in said tube, and fusible An automatic sprinkler comprising a means for normally closing said tube, sub- 5 nozzle, a. yoke or frame adjustable on said stantiall as described.

nozzle, a. tube passing through said frame 1 CHARLES E. B UELL. and nozzle, and fusible means for normally Witnesses: closing said tube, substantially as described. 1 WILBUR F. POTTER,

4. Ansutonmbio sprinkler comprising 8. WM. A. FULLER. 

